Dorsal
fin short with a week concealed spine. Anal fin short with about
9-18 rays. Pelvic fins have 6-7 rays. Gill openings wide and the
gill membranes are free from the isthmus. Nostrils far apart; no
cup-like depression below opercular flap. Adipose
fin long, low and keel-like, and continuous with rounded or truncate
caudal fin. 4 pairs of barbels.